| Year | 1951 |
| Date | 27-Sep |
| Volume | 105 |
| Issue | 2,627 |
| Page | 421 |
| Category | Petrol Engine Topics |
| Part | |
| Title | A 50-c.c. Auxiliary Engine ("Busy Bee") |
| Author | Edgar T.Westbury |
| Notes | A complete unit attached to a cycle frame as exhibited by Messrs Braid Bros., not a clutch, magneto timing, design of accessories, the carburettor, applications of the "Busy Bee", performance, epilogue |